Spectrally interleaved, comb-mode-resolved spectroscopy using swept dual terahertz combs

Optical frequency combs are innovative tools for broadband spectroscopy because a series of comb modes can serve as frequency markers that are traceable to a microwave frequency standard. However, a mode distribution that is too discrete limits the spectral sampling interval to the mode frequency sp...

Full description

Bibliographic Details
Main Authors:	Hsieh, Yi-Da, Iyonaga, Yuki, Sakaguchi, Yoshiyuki, Yokoyama, Shuko, Inaba, Hajime, Minoshima, Kaoru, Hindle, Francis, Araki, Tsutomu, Yasui, Takeshi
Format:	Online
Language:	English
Published:	Nature Publishing Group 2014
Online Access:	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3898205/

id	pubmed-3898205
recordtype	oai_dc
spelling	pubmed-38982052014-01-24 Spectrally interleaved, comb-mode-resolved spectroscopy using swept dual terahertz combs Hsieh, Yi-Da Iyonaga, Yuki Sakaguchi, Yoshiyuki Yokoyama, Shuko Inaba, Hajime Minoshima, Kaoru Hindle, Francis Araki, Tsutomu Yasui, Takeshi Article Optical frequency combs are innovative tools for broadband spectroscopy because a series of comb modes can serve as frequency markers that are traceable to a microwave frequency standard. However, a mode distribution that is too discrete limits the spectral sampling interval to the mode frequency spacing even though individual mode linewidth is sufficiently narrow. Here, using a combination of a spectral interleaving and dual-comb spectroscopy in the terahertz (THz) region, we achieved a spectral sampling interval equal to the mode linewidth rather than the mode spacing. The spectrally interleaved THz comb was realized by sweeping the laser repetition frequency and interleaving additional frequency marks. In low-pressure gas spectroscopy, we achieved an improved spectral sampling density of 2.5 MHz and enhanced spectral accuracy of 8.39 × 10−7 in the THz region. The proposed method is a powerful tool for simultaneously achieving high resolution, high accuracy, and broad spectral coverage in THz spectroscopy. Nature Publishing Group 2014-01-22 /pmc/articles/PMC3898205/ /pubmed/24448604 http://dx.doi.org/10.1038/srep03816 Text en Copyright © 2014, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by-nc-nd/3.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/3.0/
repository_type	Open Access Journal
institution_category	Foreign Institution
institution	US National Center for Biotechnology Information
building	NCBI PubMed
collection	Online Access
language	English
format	Online
author	Hsieh, Yi-Da Iyonaga, Yuki Sakaguchi, Yoshiyuki Yokoyama, Shuko Inaba, Hajime Minoshima, Kaoru Hindle, Francis Araki, Tsutomu Yasui, Takeshi
spellingShingle	Hsieh, Yi-Da Iyonaga, Yuki Sakaguchi, Yoshiyuki Yokoyama, Shuko Inaba, Hajime Minoshima, Kaoru Hindle, Francis Araki, Tsutomu Yasui, Takeshi Spectrally interleaved, comb-mode-resolved spectroscopy using swept dual terahertz combs
author_facet	Hsieh, Yi-Da Iyonaga, Yuki Sakaguchi, Yoshiyuki Yokoyama, Shuko Inaba, Hajime Minoshima, Kaoru Hindle, Francis Araki, Tsutomu Yasui, Takeshi
author_sort	Hsieh, Yi-Da
title	Spectrally interleaved, comb-mode-resolved spectroscopy using swept dual terahertz combs
title_short	Spectrally interleaved, comb-mode-resolved spectroscopy using swept dual terahertz combs
title_full	Spectrally interleaved, comb-mode-resolved spectroscopy using swept dual terahertz combs
title_fullStr	Spectrally interleaved, comb-mode-resolved spectroscopy using swept dual terahertz combs
title_full_unstemmed	Spectrally interleaved, comb-mode-resolved spectroscopy using swept dual terahertz combs
title_sort	spectrally interleaved, comb-mode-resolved spectroscopy using swept dual terahertz combs
description	Optical frequency combs are innovative tools for broadband spectroscopy because a series of comb modes can serve as frequency markers that are traceable to a microwave frequency standard. However, a mode distribution that is too discrete limits the spectral sampling interval to the mode frequency spacing even though individual mode linewidth is sufficiently narrow. Here, using a combination of a spectral interleaving and dual-comb spectroscopy in the terahertz (THz) region, we achieved a spectral sampling interval equal to the mode linewidth rather than the mode spacing. The spectrally interleaved THz comb was realized by sweeping the laser repetition frequency and interleaving additional frequency marks. In low-pressure gas spectroscopy, we achieved an improved spectral sampling density of 2.5 MHz and enhanced spectral accuracy of 8.39 × 10−7 in the THz region. The proposed method is a powerful tool for simultaneously achieving high resolution, high accuracy, and broad spectral coverage in THz spectroscopy.
publisher	Nature Publishing Group
publishDate	2014
url	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3898205/
_version_	1612049866918199296

Spectrally interleaved, comb-mode-resolved spectroscopy using swept dual terahertz combs

Similar Items